{ "cdp_num": null, "comment": "The station is operating under responsibility\r\nof the AGRS.NL organisation (RWS\/KAD\/TUD)\r\nDutch triangulation RD site+marker 240323-06", "conditions": [], "country": "Netherlands", "country_code_ISO": "NLD", "date_from": "2004-12-29 00:00:00", "date_to": null, "description": "Centre of hole for antenna mounting bolt = ARP", "geological": { "bedrock": { "condition": null, "type": "SEDIMENTARY" }, "characteristic": "SAND", "distance_to_fault": null, "fault_zone": "NO", "fracture_spacing": null }, "iers_domes": "13537M001", "instrument_collocation": [ { "comment": "Tide gauge at Noordzee coast operated by RIKZ.", "date_from": "1996-08-27 00:00:00", "date_to": null, "status": "PERMANENT", "type": "TIDE GAUGE" }, { "comment": "Dutch height system NAP benchmark No. 024F0042", "date_from": "2004-12-30 00:00:00", "date_to": null, "status": "PERMANENT", "type": "UNDERGROUND LEVELING BENCHMARK" }, { "comment": "C-Band Compact Active Transponder (CAT) manufactured by SEA\/UK. Radarsat-2 descending track t202 at 05:56:56 UTC.\r\nThe installation was preceded by test with three transponders (CAT1, CAT2 and CAT3) on 2012-03-05, with CAT2 on the roof and others nearby. CAT1 was installed 2012-05-14 on the mast. On 2012-11-16 the transponder was mounted to the other site of the mast. ", "date_from": "2012-05-14 00:00:00", "date_to": "2012-11-16 00:00:00", "status": "PERMANENT", "type": "INSAR ACTR\/D" }, { "comment": "C-Band Compact Active Transponder (CAT) manufactured by SEA\/UK. Radarsat-2 descending track t202 at 05:56:56 UTC (from 2012-05-16 to 2015-12-20), Radarsat-2 descending track t102 at 06:01:36 (from 2013-08-08 to 2015-12-30), Sentinel-1A descending track t037 (from 2015-05-24 to 2015-12-30) and Sentinel-1A descending track t110 (from 2025-05-17 to 2015-12-30). 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Ascending and descending Sentinel-1A\/B tracks. \r\nThe transponder is mounted near the GNSS antenna on the same concrete wall, but not directly connected to the GNSS antenna mast.", "date_from": "2023-03-16 00:00:00", "date_to": null, "status": "PERMANENT", "type": "INSAR ACTR\/C" } ], "local_ties": [], "location": { "city": "Ijmuiden", "coordinates": { "X": 3882053.272, "Y": 309346.206, "Z": 5034330.226, "altitude": 54.1, "lat": 52.461971154899594, "lon": 4.556057679810282 }, "country": "Netherlands", "country_iso_code": "NLD", "description": "Tide-gauge station Rijks Instituut voor Kust en\r\nZee (RIKZ), Ijmuiden, The Netherlands", "state": "Noord-Holland", "tectonic": { "plate_name": "EURASIAN" } }, "logs": { "contact": "TU Delft GNSS team (gnss-citg@tudelft.nl)", "date": "2026-01-16 00:00:00", "log_type": "UPDATE", "modified": "UNAVAILABLE", "previous": "UNAVAILABLE", "title": "IJMU00NLD.xml" }, "marker": "IJMU", "monument": { "description": "RVS PIPE ATTACHED TO TIDE GAUGE 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